After installing the files, type spinst_itsp to obtain all the
user-written commands used in the book's examples.
You should check the messages produced by the spinst_itsp command.
If there are any error messages, follow the instructions at the bottom
of the output to complete the download.

If you do not have an Internet connection from within Stata, you can download
one of the following files:

We suggest that you create a new directory and copy the materials there.

One of the files included within .zip and
.tar.Z, spinst_itsp, will install all the user-written commands
used in the book's examples when you type spinst_itsp.
However, you must be connected to the Internet for this command to work.